Which one is the essential amino acid?
A．glycine
B．methionine
C．tyrosine
D．Glutamine
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1．Which is not one carbon unit?
A．=CH－
B．－CH2－
C．―CH3
D．CO2
2．Which deamination is the main form in living organism?
A．transamination
B．oxidative deamination
C．coupled deamination
D．direct deamination
1．Which one is the essential amino acid?
A．glycine
B．methionine
C．tyrosine
D．Glutamine
1．Which one is the essential amino acid?
A．glycine
B．methionineC．tyrosineD．Glutamine2．Which deamination is the main form in living organism?（C）A．transaminationB．oxidative deamination C．coupled deaminationD．direct deamination3．Which can carry one carbon unit in living organism?（C）A．vitamine B12B．folic acidC．tetrahydrofolateD．biotin 4．Which is not one carbon unit?（D）A．=CH－B．－CH2－C．―CH3D．CO2
C．tyrosineD．Glutamine2．Which deamination is the main form in living organism?（C）A．transaminationB．oxidative deamination C．coupled deaminationD．direct deamination3．Which can carry one carbon unit in living organism?（C）A．vitamine B12B．folic acidC．tetrahydrofolateD．biotin 4．Which is not one carbon unit?（D）A．=CH－B．－CH2－C．―CH3D．CO2
D．Glutamine2．Which deamination is the main form in living organism?（C）A．transaminationB．oxidative deaminationC．coupled deaminationD．direct deamination3．Which can carry one carbon unit in living organism?（C）A．vitamine B12B．folic acidC．tetrahydrofolateD．biotin4．Which is not one carbon unit?（D）A．=CH－B．－CH2－C．―CH3D．CO2
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